Dynamics and morpho-sedimentary interactions in the lower mesotidal estuary of Villaviciosa (NW Spain): A management proposal
Keywords:Longshore bar, Dynamic and morpho-sedimentary model, Inlet, Management, Villaviciosa estuary
AbstractThe accumulation of sediment in the mouth of Villaviciosa estuary (NW Spain) is becoming an obstacle for the safe navigation in this estuary. One sector of its outer inlet is characterised by a broad shoal linked with a longshore bar of a beach, whose erosion is causing the silting of this area. On this basis, this paper aims to describe the processes that occurred in the lower part of the estuary due to the anthropogenic activities in the channel and inlet. For this purpose, several measurements were made in the water column and in the sedimentary bottoms to characterise the processes that occur in this area. Based on these results, a dynamic and morpho-sedimentary model was developed to examine the interactions between the lower estuary and the exposed part of the confining barrier beach, which allows to establish the evolutionary trends of sedimentary bottoms linked to the marina of El Puntal. Different management measures are carried out to reduce the impact of the sediment accumulation on the navigability, such as periodically dredging in the inlet of the estuary, and the subsequent dumping of the sediments in areas near to the closure depth. Consequently, future retreat of narrow inlet and sandy shoal can be avoided, maintaining the sedimentary volume in the system.
Copyright (c) 2015 G. FLOR, G. FLOR-BLANCO, J. REY
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Geologica Acta is the property of the UB, GEO3BCN, IDAEA and UAB. Geologica Acta must be cited for any partial or full reproduction. Papers are distributed under the Attribution-Share Alike Creative Commons License. This license allows anyone to reproduce and disseminate the content of the journal and even make derivative works crediting authorship and provenance and distributing possible derivative works under the same or an equivalent license.
Authors retain the copyright on their papers and are authorized to post them on their own web pages or institutional repositories. The copyright was retained by the journal from the year 2003 until 2009. In all cases, the complete citation and a link to the Digital Object Identifier (DOI) of the article must be included.
The authors can use excerpts or reproduce illustrations of their papers in other works without prior permission from Geologica Acta provided the source of the paper including the complete citation is fully acknowledged.